Now, the legislation goes back to the lower chamber, where House Speaker Mike Johnson (R-LA) and other GOP leaders are corralling votes. The House narrowly passed the bill last month in a 215-214 vote, and now that several modifications have been made to the text, more than two dozen House members are currently holdouts.

With Sens. Rand Paul and Thom Tillis opposed to the package, GOP leaders can afford only one more defection. And multiple Republicans aren't yet sold on the measure.